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| author | David S. Miller <davem@davemloft.net> | 2020-10-06 06:25:56 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-10-06 06:25:56 -0700 |
| commit | 9faebeb2d80065926dfbc09cb73b1bb7779a89cd (patch) | |
| tree | 09c011ae2e2e53713b8d3ee0e531fdfa4dbf29bd /net/ethtool/debug.c | |
| parent | 02da0b615b4bd7db747ed77199d5f1a161a0411a (diff) | |
| parent | a0de1cd3568749d3410c89b1c8bb70e90d61659f (diff) | |
Merge branch 'ethtool-allow-dumping-policies-to-user-space'
Jakub Kicinski says:
====================
ethtool: allow dumping policies to user space
This series wires up ethtool policies to ops, so they can be
dumped to user space for feature discovery.
First patch wires up GET commands, and second patch wires up SETs.
The policy tables are trimmed to save space and LoC.
Next - take care of linking up nested policies for the header
(which is the policy what we actually care about). And once header
policy is linked make sure that attribute range validation for flags
is done by policy, not a conditions in the code. New type of policy
is needed to validate masks (patch 6).
Netlink as always staying a step ahead of all the other kernel
API interfaces :)
v2:
- merge patches 1 & 2 -> 1
- add patch 3 & 5
- remove .max_attr from struct ethnl_request_ops
====================
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ethtool/debug.c')
| -rw-r--r-- | net/ethtool/debug.c | 24 |
1 files changed, 7 insertions, 17 deletions
diff --git a/net/ethtool/debug.c b/net/ethtool/debug.c index 1bd026a29f3f..f99912d7957e 100644 --- a/net/ethtool/debug.c +++ b/net/ethtool/debug.c @@ -16,11 +16,9 @@ struct debug_reply_data { #define DEBUG_REPDATA(__reply_base) \ container_of(__reply_base, struct debug_reply_data, base) -static const struct nla_policy -debug_get_policy[ETHTOOL_A_DEBUG_MAX + 1] = { - [ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT }, - [ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED }, - [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_REJECT }, +const struct nla_policy ethnl_debug_get_policy[] = { + [ETHTOOL_A_DEBUG_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), }; static int debug_prepare_data(const struct ethnl_req_info *req_base, @@ -69,10 +67,8 @@ const struct ethnl_request_ops ethnl_debug_request_ops = { .request_cmd = ETHTOOL_MSG_DEBUG_GET, .reply_cmd = ETHTOOL_MSG_DEBUG_GET_REPLY, .hdr_attr = ETHTOOL_A_DEBUG_HEADER, - .max_attr = ETHTOOL_A_DEBUG_MAX, .req_info_size = sizeof(struct debug_req_info), .reply_data_size = sizeof(struct debug_reply_data), - .request_policy = debug_get_policy, .prepare_data = debug_prepare_data, .reply_size = debug_reply_size, @@ -81,27 +77,21 @@ const struct ethnl_request_ops ethnl_debug_request_ops = { /* DEBUG_SET */ -static const struct nla_policy -debug_set_policy[ETHTOOL_A_DEBUG_MAX + 1] = { - [ETHTOOL_A_DEBUG_UNSPEC] = { .type = NLA_REJECT }, - [ETHTOOL_A_DEBUG_HEADER] = { .type = NLA_NESTED }, +const struct nla_policy ethnl_debug_set_policy[] = { + [ETHTOOL_A_DEBUG_HEADER] = + NLA_POLICY_NESTED(ethnl_header_policy), [ETHTOOL_A_DEBUG_MSGMASK] = { .type = NLA_NESTED }, }; int ethnl_set_debug(struct sk_buff *skb, struct genl_info *info) { - struct nlattr *tb[ETHTOOL_A_DEBUG_MAX + 1]; struct ethnl_req_info req_info = {}; + struct nlattr **tb = info->attrs; struct net_device *dev; bool mod = false; u32 msg_mask; int ret; - ret = nlmsg_parse(info->nlhdr, GENL_HDRLEN, tb, - ETHTOOL_A_DEBUG_MAX, debug_set_policy, - info->extack); - if (ret < 0) - return ret; ret = ethnl_parse_header_dev_get(&req_info, tb[ETHTOOL_A_DEBUG_HEADER], genl_info_net(info), info->extack, |